Watson: What are you doing?
Holmes: Nicotine patch. Helps me think. It’s impossible to sustain a smoking habit in London these days.
Watson: That’s good news for breathing.
Holmes: Ah, breathing. Breathing’s boring.
Watson: Is that three patches?
Holmes: It’s a three-patch problem.

Watson: That was amazing.
Holmes: You think so?
Watson: Of course it was. It was extraordinary. It was quite extraordinary.
Holmes: That’s not what people normally say.
Watson: What do people normally say?
Holmes: “Piss off.”